Create your own cord or replace the damaged ends on your RoadMaster 4-wire straight and Flexo-Coil electrical cords with these 4-pole, male and female connectors. Call 800-298-8924 to order Roadmaster Accessories and Parts part number RM-910030-4 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for RoadMaster 4-Wire Connectors - Trailer and Vehicle Ends. Accessories and Parts reviews from real customers.

To adapter I recommend to be able to convert a 4-way round female connector to a 4-way round male connector is by using the RoadMaster 4-Wire Connectors, part # RM-910030-4. This has both the female and the male plugs separate.
You would need to run the appropriate wires into the rear of each connector using wire like part # DW04923-1. This is jacketed 4-wire and is 14 gauge. This is sold by the foot.
When wiring connectors I recommend using a circuit tester like part # 3808 to...view full answer...

Although we do not carry a wiring harness/adapter that will allow you to split the 5-flat on your tow vehicle to allow you to connect to both the 5-flat on the trailer and the 4-round on the boat, I have a solution for you.
You will need the RoadMaster 4-Wire Connectors, # RM-910030-4, Jacketed 4-Wire (sold by the foot), # DW03240-1, and the Deka Heat Shrink Butt Connectors, # DW05745-5.
I recommend that you splice into the wiring, behind the 5-flat on your trailer, in order to add...view full answer...

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.